Duval County 2012 turnout - in terms of WHO voted and what party they are registered. Not who they actually voted for:
DEM 179k
REP 166k
OTH 69k
On election day itself it was 63k/63k/31k
Hope that helps a little
REP lead over DEMs is over 1,400 now in Duval. That is especially good news based on Methos8 earlier post showing that, in 2012, 13k more DEMs turned out than REPs. Romney still won Duval by 14,878.